Shimano Ultegra ST-6870 Dealer's Manual page 69

MAINTENANCE
Disassembly of the bracket unit and lever unit
Remove the two switch unit fixing
screws, and then remove the switches
and the switch springs. The bracket unit
and the lever unit can then be
disassembled.
4
(D)
69
(D)
Switch unit fixing screws
(#T5 TORX®)
TORX is a registered trademark of Camcar
LLC.